Depth of cure comparasion of posterior composite 3M Espe Filtek P60® with halógen lamp Coltolux® and led lamp Fivo®

Objectives: The study is based on comparing the depth of cure achieved at different times (10 and 20 seconds) by 2 types of lamps on the market, using a LED lamp brand Fivo and halogen lamp brand Coltolux
Methods: We used 60 samples of 3M Espe Filtek P60 composite, which were divided into 4 groups. They were placed in a stainless steel mold according to ISO 4049: 2009. The first group was polymerized for 10 seconds with LED FIVO lamp, the second group at the same time with Coltolux halogen lamp, the third group was polymerized to 20 seconds again with LED Fivo lamp and the last group for 20 seconds with halogen lamp Coltolux. Then the depth of cure achieved by both lamps was measured with a micrometer at 0.001mm accuracy.
Results: The data were tabulated in MS Excel to perform the descriptive analysis and then were exported to the SPSS 15.0 program for the inferential statistical analysis using the two-factor ANOVA test. The maximum depth of cure was obtained Fivo LED lamp at 20 seconds with 5,512 mm of light-cured composite, while the minimum was Coltolux halogen lamp at 10 seconds with 3,465 mm. Significant results were obtained for the type of lamp used, as well as for the exposure time and also for the lamp-time interaction.
Conclusions: As there are differences between the lamps available in the market and also by the wide range of composites, it is necessary to extend the study so the dentist knows what type of lamp is best correlated with the composite of his choice